33 lines · cpp
1// RUN: %clang_cl_asan %Od %s %Fe%t2// RUN: not %run %t 2>&1 | FileCheck %s3 4#include <stdio.h>5#include <string.h>6#include <malloc.h>7 8int main() {9 char *ptr = _strdup("Hello");10 int subscript = 1;11 ptr[subscript] = '3';12 printf("%s\n", ptr);13 fflush(0);14// CHECK: H3llo15 16 subscript = -1;17 ptr[subscript] = 42;18 // CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]19 // CHECK: WRITE of size 1 at [[ADDR]] thread T020 // CHECK: {{#0 .* main .*}}intercept_strdup.cpp:[[@LINE-3]]21 // CHECK: [[ADDR]] is located 1 bytes before 6-byte region22 // CHECK: allocated by thread T0 here:23 //24 // The first frame is our wrapper normally but will be malloc in the dynamic25 // config.26 // CHECK: #0 {{.*}} in {{malloc|_strdup}}27 //28 // The local call to _strdup above may be the second or third frame depending29 // on whether we're using the dynamic config.30 // CHECK: #{{[12]}} {{.*}} in main {{.*}}intercept_strdup.cpp:[[@LINE-21]]31 free(ptr);32}33